Closing device for preserve-tins.



A. JOHANSBN.

CLOSING DEVIGE FOR PRESERVE TINS. APPLICATION FILED MAR. 11, 1910.

973,354, Patented Oct. 18,1910.

Fig: 1.

THE NORRIS PETERS cm, wAsnumruN, n. c.

ANDREAS JOI-IANSEN, OF STAVANGER, NORWAY, ASSIGNOE TO AKTIESELSKABET STAVANGER BLIKTRYKKERI 0G MASKINVAERKSTED, OF STAVANGER, NORWAY.

CLOSING DEVICE FOR PRESERVE-PINS.

Patented Oct. 18, 1910.

Application filed March 11, 1910. Serial No. 548,630.

973,35 Specification of Letters Patent.

T 0 all whom it may concern:

Be it known that I, ANDREAS J OI-IANSEN, a citizen and resident of Stavanger, Norway, have invented certain new and useful Improvements in and Relating to Closing Devices for Preserve-Tins, of which the following is a specification.

In certain kinds of preserve tins in use until now, the closure is performed by folding and uniting together the edge of the tin cover with the upper edge of the tin walls. The cover is provided at one place with a tongue which remains free and serves to tear out the weakened part of the cover with a view of opening the tin.

In the accompanying drawing Figure 1 shows a top plan View of a tin of the well known construction; Fig. 2 shows at an enlarged scale a cross section of the folder on line AB of Fig. 1 while Fig. 3 is a similar section also drawn on an enlarged scale, on line C-D of Fig. 1. Fig. 4 shows a similar section of the improved closing fold made according to the present invention.

As clearly shown by Figs. 1 to 3 the tongue a forms the prolongation of the weakening line b of the cover of the tin so that when the tongue at is rolled up by means of a key, that part of the tin cover which is surrounded by the weakening line, is torn out of the cover, thereby allowing of the tin being opened. As shown by Fig. 2 the upper part of the vertical wall of the tin cl is folded down toward the outside while the edge of the cover is first bent upward, then downward and finally again upward, so that cover and wall engage each other like hooks as clearly shown by Fig. 2. Fig. 3 shows that the tongue at, which serves for opening the tin, is also folded. This arrangement has this drawback that the tongue is frequently torn away during the operation of opening, as the tongue is so strongly held by the fold that it is impossible to tear it out of it. It follows therefrom that the tongue is torn in a transverse direction about at the place designed by m in Fig. 3.

Now in the closing device which forms the subject matter of this invention, this drawback, that is the tearing away of the tongue, is avoided so that the preserve tin may always be opened in a sure. and uniform manner by rolling the tongue upon itself.

The new arrangement 1s illustrated by Fig. 4 which shows, like Fig. 3, at an enlarged scale a vertical section of the upper closing fold and this at the place where the tongue is positioned. As shown by Fig. 4, the tongue is here not engaged in the fold, but the latter is interrupted at the place where the tongue is positioned andthe fold is then shaped as shown by Fig. 4:. other places of the preserve tins, the fold is shaped as shown by Fig. 2 and, as already stated, this closing fold is only interrupted in the novel construction at the place where the tongue is positioned.

It will be readily understood from the inspection of Fig. 4, that the upper edge of the wall of the preserve tin is folded over outward and that the bent part d is ap plied in a flat state on the Vertical part 03. The edge of the closing cover is first bent upward, then downward and is applied against the upper reinforced edge of the wall (Z of the tin. Below the part cl begins the tongue and the latter is pressed against the wall 03 so that thereby a sufficiently tight closure of the preserve tin is also obtained at the place where the tongue is positioned.

As clearly shown by Fig. i it is impossible with this arrangement that the tongue be torn away. The weakening lines of the cover can be continued until they reach the base of the tongue and thus form the continuation of the outer edge of the tongue in such a manner that in this arrangement the uniform and reliable opening of the preserve tins is always ascertained. In order to increase still more the reliable opening of the preserve tins a notch as shown at w and e in Fig. 1 can be provided on each side of the base of the tongue.

Having now fully described my said invention what I claim and desire to secure by Letters Patent, is:

1. In combination with a preserving ves sel, of a closure therefor having a projecting tongue and a weakening line adjacent the tongue, the outer ends of the walls of the receptacle and the edges of the closure being interlocked up to and terminating at each side of the tongue, the edge of the wall of the receptacle adjacent the tongue being bent to engage the outer surface of said wall, and the tongue being bent to engage the said bent portion of the wall of the receptacle whereby when the tongue is pulled to rip the closure, the interlocking joint At all between the closure and the vessel will remain intact.

2. In combination with a preserving vessel, of a closure therefor, having a projecting tongue and a weakening line adjacent the tongue, the outer edges of the walls of the receptacle and the edges of the closure being interlocked up to and terminating at each side of the tongue, the edge of the wall of the receptacle adjacent the tongue being bent to engage the outer surface of said wall, and the tongue being bent downwardly past the bent portion of the wall of the receptacle and engaging the latter,

whereby when the tongue is pulled to rip the closure the interlocking joint between the vessel and closure will remain intact,

the tongue being transversely bent below the bent portion of the wall to snugly engage the outer surface of the receptacle below the bent portion thereof, to form a seal.

3. In combination with a preserving vessel, of a closure therefor, having a projecting tongue and weakening line adjacent the tongue, the outer edges of the Walls of the receptacle and the edges of the closure being interlocked up to and terminating at each side of the tongue, the tongue being bent down over and engaging the upper edge of the vessel between the two points Where the interlocking of the edges of the vessel and closure terminate, whereby when the tongue is pulled to rip the closure, the interlocking joint between the closure and vessel will remain intact.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

ANDREAS J OHANSEN.

WVitnesses:

R. M. RASMUSEN, SARA HEGLAND. 

